101212122199987 has 2 divisors, whose sum is σ = 101212122199988. Its totient is φ = 101212122199986.

The previous prime is 101212122199939. The next prime is 101212122200027. The reversal of 101212122199987 is 789991221212101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101212122199987 is a prime.

It is not a weakly prime, because it can be changed into another prime (101212122199687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50606061099993 + 50606061099994.

It is an arithmetic number, because the mean of its divisors is an integer number (50606061099994).

Almost surely, 2^{101212122199987} is an apocalyptic number.

101212122199987 is a deficient number, since it is larger than the sum of its proper divisors (1).

101212122199987 is an equidigital number, since it uses as much as digits as its factorization.

101212122199987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 55.

The spelling of 101212122199987 in words is "one hundred one trillion, two hundred twelve billion, one hundred twenty-two million, one hundred ninety-nine thousand, nine hundred eighty-seven".